Diaphragm pulsator



FIG. 1 is a side view showing my new design for a diaphragm pulsator;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is an inverted opposite side view thereof; and,

FIG. 6 is a rear view thereof. 

The ornamental design for a diaphragm pulsator, as shown and described. 